这是我的代码:
<?php
if(isset($_POST['submit']) & !empty($_POST['appid'])) {
$app = mysql_real_escape_string($_POST['appid']);
//database parameters
$conp = mysqli_connect($hostname, $user, $password, $database) or die('error in connection' . mysqli_error());
//actual data for appid's
$appsi = mysqli_query($conp, "SELECT distinct package_name FROM `user_app` where `app_id` = '$app'");
$all = array();
while($row = mysqli_fetch_assoc($appsi)) {
$all[] = $row["package_name"]; // array problem
}
foreach ($all as $value) {
$install = mysqli_query($conp, "SELECT COUNT(*) AS installs from `install` where package_name = '$value'");
$row = mysqli_fetch_assoc($install);
$data[] = '<b>' .$row["installs"] . '</b>';
$reg = mysqli_query($conp, "SELECT COUNT( DISTINCT `imei_num` ) AS reg FROM `user_app` WHERE package_name = '$value'");
$row = mysqli_fetch_assoc($reg);
$regd[] = '<b>' .$row["reg"] . '</b>';
}
}
mysqli_close($conp);
?>
<html>
<head>
<title>script</title>
</style>
</head>
<body>
<span style="text-align: center"><h1>Beta</h1></span>
<form name="query" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<p>Enter Application-Specific Id:</p>
<select name='appid'>
<?php
$conp = mysqli_connect($hostname, $user, $password, $database) or die('error in connection' . mysqli_error());
$getid = mysqli_query($conp, "SELECT distinct `app_id`, `appidt` from `user_app` group by `app_id`") or die('get data failed' . mysqli_error());
while(($row = mysqli_fetch_assoc($getid)) != null) {
echo "<option value = '{$row['app_id']}' selected = 'selected'";
if ($selected == $row['app_id']) {
echo "selected = 'selected'";
}
echo ">{$row['appidt']}</option>";
}
mysqli_close($conp);
?>
</select>
<p><input type="submit" name="submit" value="Go" /></p>
</form>
<div>
<p><?php echo '<br />' .'<b>'. 'Application Id : '. $app . '</b>'; ?> </p>
<hr />
<table border=2px width=100%>
<tr>
<th><b>App Packages</b></th>
<th><b>Registrations</b></th>
<th><b>Installs</b></th>
</tr>
<tr>
<td><?php echo implode("<br><br>", $all); ?></td>
<td align="center"><?php echo implode("<br><br>", $regd); ?></td>
<td align="center"><?php echo implode("<br><br>", $data); ?></td>
</tr>
</table>
<p><?php echo "$name"; ?></p>
</div>
</body>
</html>
我在一个数组中获取我的所有包名称:all[],包的范围可能是 10 或 20,之后我想要所有下载对应于另一个表名上的downloads
包和另一个表上的包app_packages
。
我不能使用连接,因为包表包含特定的包,但下载包含许多与包对应的下载。
因此,我将所有包放入 all[] 并在 foreach 循环名称 $value 中使用它们,现在我得到每个包的所有安装,我可以通过 implode 函数显示它。但是在我的前端,当我从下拉列表中选择一个 appid 时,如您所见,检索每个包的下载数将花费大量时间。这不是我想要展示的,因为它非常耗时。
请看这个问题,如果我在解释中遗漏了什么,那么我道歉,提示我并提及它。